test(fanal): add test to check latest version

pkg/fanal/analyzer/language/nodejs/yarn/testdata/latest-version/package.json

@@ -0,0 +1,8 @@
+{
+  "dependencies": {
+    "debug": "latest"
+  },
+  "devDependencies" : {
+    "js-tokens": "^9.0.0"
+  }
+}

pkg/fanal/analyzer/language/nodejs/yarn/testdata/latest-version/yarn.lock

@@ -0,0 +1,20 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+debug@latest:
+  version "4.3.5"
+  resolved "https://registry.npmjs.org/debug/-/debug-4.3.5.tgz"
+  integrity sha512-pt0bNEmneDIvdL1Xsd9oDQ/wrQRkXDT4AUWlNZNPKvW5x/jyO9VFXkJUP07vQ2upmw5PlaITaPKc31jK13V+jg==
+  dependencies:
+    ms "2.1.2"
+
+js-tokens@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.npmjs.org/js-tokens/-/js-tokens-9.0.0.tgz"
+  integrity sha512-WriZw1luRMlmV3LGJaR6QOJjWwgLUTf89OwT2lUOyjX2dJGBwgmIkbcz+7WFZjrZM635JOIR517++e/67CP9dQ==
+
+[email protected]:
+  version "2.1.2"
+  resolved "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz"
+  integrity sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==

pkg/fanal/analyzer/language/nodejs/yarn/yarn_test.go

@@ -354,6 +354,61 @@ func Test_yarnLibraryAnalyzer_Analyze(t *testing.T) {
 				},
 			},
 		},
+		{
+			name: "package uses `latest` version",
+			dir:  "testdata/latest-version",
+			want: &analyzer.AnalysisResult{
+				Applications: []types.Application{
+					{
+						Type:     types.Yarn,
+						FilePath: "yarn.lock",
+						Packages: types.Packages{
+							{
+								ID:           "[email protected]",
+								Name:         "debug",
+								Version:      "4.3.5",
+								Relationship: types.RelationshipDirect,
+								Locations: []types.Location{
+									{
+										StartLine: 5,
+										EndLine:   10,
+									},
+								},
+								DependsOn: []string{
+									"[email protected]",
+								},
+							},
+							{
+								ID:           "[email protected]",
+								Name:         "js-tokens",
+								Version:      "9.0.0",
+								Relationship: types.RelationshipDirect,
+								Dev:          true,
+								Locations: []types.Location{
+									{
+										StartLine: 12,
+										EndLine:   15,
+									},
+								},
+							},
+							{
+								ID:           "[email protected]",
+								Name:         "ms",
+								Version:      "2.1.2",
+								Indirect:     true,
+								Relationship: types.RelationshipIndirect,
+								Locations: []types.Location{
+									{
+										StartLine: 17,
+										EndLine:   20,
+									},
+								},
+							},
+						},
+					},
+				},
+			},
+		},
 		{
 			name: "happy path with alias rewrite",
 			dir:  "testdata/alias",